YIELD OF PARA RUBBER FROM CULTIVATED TREES. 



1 907 Continued. 



Several companies do not indicate in their reports the number 

 of trees tapped, but instead, state the yield of rubber from a 

 given acreage. A comparison of such reports for the year 1906 

 shows that the average yield of rubber per acre varied from 

 57 Ibs. to 151 Ibs. 



Extracted from report of Vallambrosa Rubber Co. Ltd., for year ended 

 3 ist March 1907. 



